I'd suggest that most terminals were 3278s, so his statement stands.  But
we'll never know.

On Mon, May 11, 2020 at 3:28 PM Seymour J Metz <sme...@gmu.edu> wrote:

> > Most 3270 terminals seem to be of the (simpler) CUT variant.
>
> I doubt it. Certainly all of these are DFT.
>
> • IBM 3179 G Color Graphic Display Station
> • IBM 3192 G Color Graphics Display Station
> • IBM 3193 Display Station
> • IBM 3194 Display Terminal
> • IBM 3290 Information Panel
> • IBM 3270 Personal Computer.
>
> Does anybody know whether any of the InfoWindow displays are CUT, and, if
> so, which?
>
> I suspect that it will be easier to modify, e.g., x3270 to support the
> 3290 features than to implement DFT without help from IBM, but bitsavers
> does have some 3174 and 3274 CE manuals, and maybe one of them has what you
> need.
>
>
>
> --
> Shmuel (Seymour J.) Metz
> http://mason.gmu.edu/~smetz3
>
> ________________________________________
> From: IBM Mainframe Discussion List [IBM-MAIN@LISTSERV.UA.EDU] on behalf
> of Alexander Huemer [alexander.hue...@xx.vu]
> Sent: Monday, May 11, 2020 2:16 PM
> To: IBM-MAIN@LISTSERV.UA.EDU
> Subject: 3270 terminals: CUT vs. DFT
>
> Hi
>
> I have a 3290 terminal that I'd like to put to some use. See email
> thread 'Talking to 3270 terminals?' that I started Jan 14.
> Somebody then pointed me to oec[1], which is an awesome project. I have
> built the hardware interface that is required to talk to a 3270 terminal
> on the hardware level. A picture of the interface and a video of the
> terminal can be found at [2].
>
> Now, the friendly person who created oec says that the 3290 is a so
> called DFT (Distributed Function Terminal), in contrast to a CUT
> (Control Unit Terminal). Most 3270 terminals seem to be of the (simpler)
> CUT variant. oec only works with CUT terminals. Extending the
> functionality to enable it to work with DFT terminals isn't trivial.
>
> Does anybody on the list here know of additional documentation besides
> what's mentioned at [3] that could be helpful to implement DFT support?
>
> What would also be very helpful is a protocol trace of any kind of the
> communication between a 3174 and a DFT terminal.
>
> -Alex
>
> [1]
> https://secure-web.cisco.com/1NnRTMD_PTNE56hcPN3Zoil25kvZDUUK_aipLBMH0L1wILqqABd8VqLfLufezSPeE_Fl4x00j7t4NfyMBkNjiG9PZJVFzcisGkVw2zDksozehbGrT1dQrE0Ab77RISHAxIQOxnUnRrTtoTrsSrrPsu0jB_gX0Wu7yY3WQm4OWspA270WOpKiWNPsOuRmstQQpzBMsjKSh2liu3id4kuAg3n_Anb4G2bBwbb4hvDUDYwgDt6oVZYjuuMmpgqXD6BoDKPz8h13B3FNewEGGG-ZmkWrk8Ij2IMQB2BwK-56UDvG1tFuhjaZRmy8w4zpndnP-EtTI3GVvakjoOfX9TfnAX8Jkf44VijzUU9DY-2nBQHJtCnhDUEwfezo4317R__cJdwXO34VGrBQVzqETM7RjUNDyRR0uqgmmjgiazA_-Er6FIi6yH2m1euIXZa34S3xhYqqtFwfDa_ElLFDmsmOI2Q/https%3A%2F%2Fgithub.com%2Flowobservable%2Foec
> [2]
> https://secure-web.cisco.com/1pSKlPn7aH5BVsfyddjr3HyN_XBjHGssIdgXlLr5CxccG7hAYb_O5qPKiIdRoApG1elM2Wd9QHZu8E-Sc0Xs6zVv0qISCsksY98nFPIe4uoRAieXyzi8hgly4lpVu7klwwS9g8wH1b4FfatJ0HsF1a8dfDnI-6l3OxLz3Jy338dAlfK2uq6u0v4C4M0d81GHudLtr_VFDQylLJhpec2y2uLiLbGwjSHUH35bLwEyjNd3ieBfIBxmlVuhlb3l46ibyiWGouVr4Ik0Gv2xmSL7s7rC35o3kYxwRawP7KL4ODxWKDeikbWKj0j2V8_T4TKfXlwLvH-jYtZ5zOnLAg4DNyo6HSLYXAp0Zv235Je698lh_uza4HemJsGDS2-uZNyNE1cuP43_FPksOmUrw6l7Hb2EzSd_Dthu4mEIpdYKZ3QVTjXl6NCaXqVR0EOhzTiAG/https%3A%2F%2Fahuemer.xx.vu%2Fvolatile%2F2020-05-11-P6C1Wc3u1wU%2F
> [3]
> https://secure-web.cisco.com/1lc47FG678Pn52RvDToQE0dXvwOnbKbGRbN6-Isvy6vMB2s_1yJBYWRZduvax-epmacIYbcnUCmIDLFWsbAlx_fWds6f40LanIVAYPxdce1BHtR1n3vOrRj5HYg2a7X0OUGDmyQo5lbNDPJe4_1ZWQef0LNTjfaSRCzPpj3tZII47tuuxs28-fTaGV4MDSgtO9jaD-f7yC5zLnri6JD3NrMLNk_lXBXHB_Hk3br48XLWLuwVAaggwCCR45N5Hu_758ek0a2pzvPqte89y2l8WKPiWo5YcyZ5zBqkVcMMN8_c2GGaFmeCl8oAT8xZPna0HAe9_wOfiXZhazeqZNXgkLTtp5SIkDA-w89OFkBUEiZ7zDJOBlPKrQImvQ80P_BNvWDFPNOV4FkQzE23fVo7OCcs8cz0F3DWBQ9Vv8LZrlyYfNFgscrOK-BreBPLoDCZPagTbpFJQBCNrgWM8LyVDwQ/https%3A%2F%2Fgithub.com%2Flowobservable%2Fcoax%2Fblob%2Fprotocol%2Fprotocol%2Fprotocol.md
>
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-- 
zMan -- "I've got a mainframe and I'm not afraid to use it"

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